How to Deploy Elasticsearch Cluster on Kubernetes

1. Deploy Elasticsearch Cluster on
Kubernetes
Presenter: Elastic Saudi Arabia - Meetup
Date: 23 June - 2021 - 09:00 PM

2. Chief Architect
Elastic Community Lead in the Middle East
Staff engineer | CKA and CKAD
Mohammad Abusaa
Ismail Anjrini

3. Elastic Community
https://www.meetup.com/Elastic-Saudi-Arabia/ 500+
Voucher (400$)

4. Kubernetes

5. What is Kubernetes ?
Kubernetes, also known as K8s, is an open-source system for automating deployment, scaling,
and management of containerized applications.
It was originally designed by Google and is now maintained by the Cloud Native Computing
Foundation.
Kubernetes runs your workload by placing containers into Pods to run on Nodes.

6. Pods
Pods are the smallest deployable units of computing that you can create and manage
in Kubernetes.
A Pod is a group of one or more containers, with shared storage and
network resources.
Container vs initContainer

7. StatefulSets vs Deployment
Item Deployment Statefulset
Identity of pods Identical, it will get
random Id
Sticky unique Identifier for each
pod
Order of
creation/deletion
Random order Ordered, cannot be created or
deleted at the same time
Pods endpoints Random name, we
cannot rely on it.
Fixed per pod
Persistent storage By nature , it does not
need it, but you can use
it
By nature, a StatefulSet needs
persistent storage so that the
application saves its state and
does not lose data across restarts.

8. Persistent volume
A PersistentVolume (PV) is a piece of storage in the cluster that has been provisioned
by an administrator or dynamically provisioned using Storage Classes.
It have a lifecycle independent of any individual Pod that uses the PV.

9. Elasticsearch

10. Kibana

11. Service
StatefulSet
Pod
ConfigMap
Shards
PV
Settings